Cannot pass empty value of --build-arg

Actual behavior I tried to give ARG an empty value, but it's failed. The ARG still uses the default value. See below Dockerfile

ARG REGISTRY=172.11.0.6:30002/
FROM ${REGISTRY}docker.io/library/golang:1.20 as builder

when I run the following command,

docker run -v .:/data gcr.io/kaniko-project/executor:latest \ --no-push --dockerfile=/data/Dockerfile --build-arg REGISTRY=''

it still pulls image from 172.11.0.6:30002/docker.io/library/golang:1.20

Expected behavior It can pull image from docker.io/library/golang:1.20

To Reproduce See above.

Additional Information

Dockerfile Please provide either the Dockerfile you're trying to build or one that can reproduce this error.
Build Context Please provide or clearly describe any files needed to build the Dockerfile (ADD/COPY commands)

Kaniko Image (fully qualified with digest)

Triage Notes for the Maintainers

Description	Yes/No
Please check if this a new feature you are proposing	- [ ]
Please check if the build works in docker but not in kaniko	- [ ]
Please check if this error is seen when you use `--cache` flag	- [ ]
Please check if your dockerfile is a multistage dockerfile	- [x]

GoogleContainerTools / kaniko